Labor Union Act Article 35

An employer or supervisory employees who represent the employer in exercising the managerial authority shall not proceed the following practices:1. Refusing to hire, dismiss, demote, reduce the wage of, or render other unfair treatment to an employee who organizes or joins a labor union, participates in activities held by a labor union, or assumes the office of a labor union,2. Requiring an employee or job applicant not to join a labor union or assume the office of a labor union as a condition of hiring,3. Refusing to hire, dismiss, demote, reduce the wage of, or render other unfair treatment to an employee who requests collective bargaining or participates in related activities concerning collective bargaining,4. Dismiss, demote, reduce the wage of, or render other unfair treatment to an employee who participates in or supports industrial dispute action, and5. Improperly influence, impede or restrict the establishment, organization or activities of a labor union.Any dismissal, demotion, reduction of wage made by the employer or supervisory employees who represent the employer in exercising the managerial authority as prescribed in the preceding Paragraph shall be null and void.
中文原文 工會法第35條
雇主或代表雇主行使管理權之人,不得有下列行為:
一、對於勞工組織工會、加入工會、參加工會活動或擔任工會職務,而拒絕僱用、解僱、降調、減薪或為其他不利之待遇。
二、對於勞工或求職者以不加入工會或擔任工會職務為僱用條件。
三、對於勞工提出團體協商之要求或參與團體協商相關事務,而拒絕僱用、解僱、降調、減薪或為其他不利之待遇。
四、對於勞工參與或支持爭議行為,而解僱、降調、減薪或為其他不利之待遇。
五、不當影響、妨礙或限制工會之成立、組織或活動。
雇主或代表雇主行使管理權之人,為前項規定所為之解僱、降調或減薪者,無效。

English translation for reference only; the Chinese text prevails. Not legal advice.